The 3rd-year D group of the Red Copper Academy is a problem class full of violence and confrontation all day long, gathering super bad elements from the whole school. Among them, the two factions of Ogata Yamato (played by Gao Muxiong) and Feng Jianlian (played by Sanpu Chunma) are the most fierce. In order to rectify this class that is like a cancer and save the fate of the school, the school invited the self-satisfied Aruwatari Goro (played by Shengjiu Sheng) to serve as the head teacher of the 3rd-year D group, but on his first day in office, he was thrown out of the classroom by the teenagers and lost face. In order to prevent losing his job, Aruwatari strongly recommended his nemesis to the chairman-the legendary female teacher Yamaguchi Kumiko (played by Nakama Yukie). Kumiko, who teaches foreign students on a small island in the south, was fired for poor work. Taking this opportunity, she returned to the most familiar high school teacher position. The brand-new story of Jidao Xianshi is staged again, and the beautiful and tense new semester is expected... This film is the third part of the TV series of the same name.